# Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import torch
from torch.multiprocessing import Process

# we need this import to check if it is safe to import DALI and not touch the CUDA runtime
# that could crash forked process
import nvidia.dali as dali  # noqa:F401


def task_function():
    torch.cuda.set_device(0)


def test_actual_proc():
    phase_process = Process(target=task_function)
    # phase_process.daemon = True
    phase_process.start()
    phase_process.join()
    assert phase_process.exitcode == 0
